It's not the lack of progress or signings its the fact we could lose Jorginho, Kovacic, Kante, Mount, and Havertz in 6 months. Thats essentially the core of the Chelsea team ripped apart. Even if we do replace these players with top quality replacements isn't Pochettino going to be in the same position as Potter with a load of players that have only just met? It can't be a good idea going in to the new season with only Thiago, Chilwell, James, and Kepa who have know each other for more than a season. That plus there's a big possibility we could lose all these useful players and be stuck with Pulisic and Zyiech.